Question: Suppose you are given a relation R with four attributes, ABCD. For each of the following sets of FDs , assuming those are the only

Suppose you are given a relation R with four attributes, ABCD. For each of the following sets of FDs, assuming those are the only dependencies that hold for R, identify the candidate keys for R.
a) B->C, D->A
b) ABC->D, D->A
c) A->B, BC->D, A->C

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